| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.jackrabbit.oak.plugins.document.persistentCache; |
| |
| import java.nio.ByteBuffer; |
| |
| import org.apache.jackrabbit.oak.cache.CacheValue; |
| import org.h2.mvstore.WriteBuffer; |
| import org.h2.mvstore.type.DataType; |
| import org.h2.mvstore.type.StringDataType; |
| |
| public class KeyDataType implements DataType { |
| |
| private final CacheType type; |
| |
| public KeyDataType(CacheType type) { |
| this.type = type; |
| } |
| |
| @Override |
| public int compare(Object a, Object b) { |
| return type.compareKeys(a, b); |
| } |
| |
| @Override |
| public int getMemory(Object obj) { |
| return ((CacheValue) obj).getMemory(); |
| } |
| |
| @Override |
| public void write(WriteBuffer buff, Object obj) { |
| String s = type.keyToString(obj); |
| StringDataType.INSTANCE.write(buff, s); |
| } |
| |
| @Override |
| public Object read(ByteBuffer buff) { |
| String s = StringDataType.INSTANCE.read(buff); |
| return type.keyFromString(s); |
| } |
| |
| @Override |
| public void write(WriteBuffer buff, Object[] obj, int len, boolean key) { |
| for (int i = 0; i < len; i++) { |
| write(buff, obj[i]); |
| } |
| } |
| |
| @Override |
| public void read(ByteBuffer buff, Object[] obj, int len, boolean key) { |
| for (int i = 0; i < len; i++) { |
| obj[i] = read(buff); |
| } |
| } |
| |
| } |